Mysterious structures and abandoned islands reveal dark histories

Discover headless skeletons, undersea craters, and an island full of dolls

Explore a volcanic island, a decaying mansion, and a Cold War base

Investigations into mass graves, rumors of mysterious flying objects, dinosaur remains, and strange ritual artifacts

Uncover the ruins of an unknown civilization and a long-lost temple.

Skeletal remains, a spider discovery, and thousands of dead seals.

Terraces shrouded in mystery; hundreds of human remains; a blood-red beach.

Findings include a volcanic island, burials, a computer, orcas vs. sharks

Abandoned structures are found; Havana Syndrome; a long-lost island

Findings include legendary shipwreck, military structures and stone disks